Product Description

Rubber Spider Coupling Characteristic: 

1. Performance Shock Absorber
2. Low Compression Deformation
3. Corrosion Resistance
4. Oil Resistance
5. High Pressure Resistance
6. Wear Resistance

Rubber Material Compare

E – Excellent          G – Good          F – Fair          P – Poor
Material Properties
Property	NBR	EPDM	CR	Silicone	FKM	NR	SBR	PU	HNBR	FVMQ	IIR
Abrasion Resistance	G	G	G	P	G	E	E	E	G	P	G
Acid Resistance	F	G	F	F	E	F	F	P	E	F	G
Chemical Resistance	F	E	F	G	E	F	F	F	G	E	E
Cold Resistance	G	G	F	E	P	G	G	G	G	G	G
Compression Set Resistance	G	G	F	G	E	G	G	F	G	G	F
Dynamic Properties	G	G	F	P	G	E	E	E	G	P	F
Electrical Properties	F	G	F	E	F	G	G	F	F	E	G
Elongation	G	G	G	F	F	F	F	F	G	F	G
Flame Resistance	P	P	G	F	E	P	P	P	P	G	P
Heat Resistance	G	G	G	E	E	F	F	F	E	E	G
Impermeability	G	G	G	P	G	F	F	G	G	P	E
Oil Resistance	E	P	F	F	E	P	P	G	E	G	P
Ozone Resistance	P	E	G	E	E	P	P	E	G	E	G
Tear Resistance	F	G	F	P	F	G	G	G	F	P	G
Tensile Strength	G	G	G	P	G	E	E	E	E	F	G
Water Resistance	G	E	F	G	F	G	G	P	E	F	G
Weather Resistance	F	E	E	E	E	F	F	E	G	E	G

Why Us:

We have a fully-equipped workshop that meets ISO 9001:2015 and IATF 16949:2016 requirements. All products are compliant
with FDA, WRAS, UL, RoHS and REACH standards, and meet DIN, JIS and ASTM regulations. Material report and dimension
checking report are available.

1. Quality Approvals. More than 15 years professional manufacture experience.
2. Experienced Staff and Service.   Professional R&D team, production team, sales team, after-sales service team.
3. Product Performance and affordable cost.   Superior performance with most competitive price.
4. Prompt Delivery.   Faster delivery time. 
5. Small Orders Accepted.
 

Material	Rubber Metal Bonded, NR Rubber, SBR Rubber, Carbon Steel, Stailess Steel
Material Report	FDA, ROHS, UL, WRAS and REACH
Dimension	Standard Sizes or As per customers’ Requirement
Certifications	ISO9001,IATF16949,ISO14001
Color	Any colors according to PANTONE or RAL
Surface Finish	Texture (VDI/MT standard, or made to client’s sample), polished (high polish, mirror polish), smooth, painting, powder coating, printing, electroplating etc.
Service	Custom Made or OEM and ODM
Free Samples	Okay
Production Ways	CAD Drawing, 3D Files or Samples
Production Capacity	200T,300T and 500T Compressing Molding, Injection Molding, Auto Vacuum Vulcanizing, Plastic Injection, and Extrusion
Supplying Capacity	One Million Pieces/ Month
Tolerance	Generally±0.05mm or Better
QC	PPAP, In House Control, Third Party Inspection Institution such SGS, TUV
Lead Time	15 Days for Molding, 15-20 Days for Series Production
Application	Industry Machinery,Automotive,Mechanical Equipment, Construction, House Application, Medical Machine
More Parts	Grommet, sleeve, feet, gasket, wheel, bellow, cap, dust cover, pad, washer,  Strip, plug, stopper, grip, seal, bushing, bumper, blocks, and anti vibration mounts etc.

Supplying Standard and Customized Rubber & Plastic Parts
Established in 2004, Xihu (West Lake) Dis. Rubber is specialized in providing quality customized rubber molding,
extrusion parts, plastic injection products and some standard parts.

Meeting Various Standards
We have a fully-equipped workshop that meets ISO 9001:2015 and IATF 16949:2016 requirements.
Our products are compliant with FDA, WRAS, UL, RoHS and REACH standards, and meet DIN, JIS
, BS and ASTM regulations.

Parts include, but are not limited to:
Grommet, sleeve, feet, gasket, wheel, bellow, cap, dust cover, pad, washer, Strip, plug, stopper, grip,
seal, bushing, bumper, blocks, and anti vibration mounts etc.

FAQ

1. What types of rubber do you use?

Xihu (West Lake) Dis. Rubber has extensive experience in a vast range of rubber, including: Natural Rubber, SBR, CR, NBR, HNBR,
EPDM, Silicone Rubber, FPM, ACM, FK etc.

2. What types of plastic do you use?
Xihu (West Lake) Dis. Rubber has extensive experience in a vast range of plastics, including: ABS, Polypropylene (PP), PVC, POM,
PE, PEEK, Polyamide (PA) Nylons, PBT, etc.

3. What services do you provide?
We offer a broad range of services, including, Custom Rubber Molding, Liquid Injection Molding, Rubber Extrusion, and
Rubber/Plastic to Metal Bonded Parts.

4. Why us?
4.1 More than 15 years professional manufacture experience.
4.2 Professional R&D team, production team, sales team, after-sales service team.
4.3 Superior performance with most competitive price.
4.4 Faster delivery time.

5. Perfect quality control process
5.1 Raw material inspection 
      All raw materials before warehousing must be tested, and the corresponding physical property report shall be issued,
and compared with the physical property report of raw materials. Only when the test values of the 2 physical property
reports are consistent, can they be warehoused.

5.2 Mold inspection
      After mold development or cleaning, we will check the full size of the mold to ensure that the quality of each cavity is
the same.

5.3 Product inspection
      In the process of product production, inspectors regularly inspect the semi-finished products to ensure the rationality
of the process and control the defective rate within a reasonable range.

5.4 Finished product inspection
      The double inspection can ensure that the product appearance and size are 100% qualified.

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What are the common challenges associated with spider coupling misalignment and how can they be addressed?

Misalignment is a common challenge in spider couplings that can lead to reduced efficiency, increased wear, and potential coupling failure. Here are the common challenges associated with misalignment and how they can be addressed:

• Reduced Torque Transmission: Misalignment can decrease the effective torque transmitted between the shafts, leading to inefficiency and potential overload. Regularly check and align the shafts according to the manufacturer’s recommendations to ensure proper torque transmission.
• Vibration and Noise: Misalignment can cause excessive vibrations and noise in the machinery. Implement precision alignment techniques during installation to minimize misalignment-induced vibrations and noise.
• Increased Wear: Misalignment results in uneven loading on the elastomeric spider, causing premature wear and potential failure. Regularly inspect the coupling for signs of wear and replace the elastomeric spider if necessary. Address misalignment promptly to prevent excessive wear.
• Heat Generation: Misalignment can generate heat due to friction between the elastomeric spider and the hubs. This can lead to accelerated wear and reduced coupling lifespan. Proper alignment helps minimize heat generation and associated issues.
• Shaft Fatigue: Severe misalignment can induce shaft fatigue and stress concentrations, leading to shaft failure over time. Avoid excessive misalignment and ensure that the coupling is properly aligned during installation.
• Reduced Service Life: Misalignment puts additional stress on the elastomeric spider, reducing its service life. Proper alignment and maintenance practices can extend the service life of the coupling.
• Performance Variations: Misalignment can lead to variations in performance and inconsistent operation of the machinery. Regularly monitor the coupling’s performance and address any issues promptly to ensure consistent operation.

To address these challenges, it’s crucial to prioritize precision alignment during the installation of the spider coupling. Follow the manufacturer’s guidelines for alignment tolerances and use alignment tools and techniques to achieve accurate alignment. Regular maintenance, including inspections and alignment checks, will help mitigate the negative effects of misalignment and ensure the reliable performance of spider couplings in industrial applications.

Can you explain the concept of torsional stiffness in relation to spider couplings?

Torsional stiffness is a crucial concept in the design and functionality of spider couplings. It refers to the ability of a coupling to resist rotational deformation (twisting) when subjected to a torque load. In other words, torsional stiffness measures how much a coupling can maintain its shape and transmit torque without excessive twisting or deformation.

In the context of spider couplings:

• High Torsional Stiffness: A coupling with high torsional stiffness exhibits minimal angular deflection or twisting when torque is applied. This ensures accurate torque transmission and precise alignment between connected shafts. High torsional stiffness is especially important in applications that require accurate positioning and synchronization.
• Low Torsional Stiffness: A coupling with low torsional stiffness allows for some degree of angular misalignment between shafts and can accommodate slight variations in torque load. This flexibility can be advantageous in applications where misalignment or shock absorption is necessary.

When selecting a spider coupling for a specific application, the torsional stiffness of the coupling needs to be considered based on the requirements of the machinery system. The choice between high and low torsional stiffness depends on factors such as the level of precision needed, the type of load, the degree of misalignment, and the overall performance objectives.

It’s important to note that while torsional stiffness is a key consideration, other factors like the material of the elastomeric spider, size of the coupling, and the type of spider profile also play a role in the coupling’s overall performance and behavior.

Are there different types of spider couplings available for various uses?

Yes, there are different types of spider couplings available to suit various industrial applications and requirements. These variations in design and material offer flexibility in choosing the right coupling for specific uses. Here are some common types of spider couplings:

• Standard Jaw Couplings: These couplings feature a simple design with two hubs and an elastomeric spider. They are suitable for general-purpose applications that require misalignment compensation and torque transmission.
• Curved Jaw Couplings: These couplings have curved lobes on the elastomeric spider, allowing for increased misalignment compensation and dampening of vibrations. They offer higher torque capacity and are commonly used in pumps, compressors, and conveyors.
• Spider Couplings with Spacer: These couplings include a spacer between the hubs, allowing for greater axial misalignment compensation. They are used in applications with longer distances between shafts.
• Lovejoy Couplings: Lovejoy couplings are a specific brand of spider couplings known for their high torque capacity, durability, and ease of installation. They come in various styles, including standard, curved jaw, and split type.
• Bowex Couplings: Bowex couplings are designed for applications with high torque requirements and aggressive operating conditions. They offer excellent misalignment compensation and are used in heavy-duty machinery.
• Insert Material Variations: Spider couplings come with elastomeric inserts made from various materials such as rubber, polyurethane, and thermoplastic. These materials offer different levels of flexibility, temperature resistance, and chemical resistance.
• Electrically Insulating Spider Couplings: Some spider couplings are designed with electrically insulating materials to prevent electrical current transmission between shafts. These couplings are used in applications where electrical isolation is critical.

The choice of spider coupling type depends on factors such as torque requirements, misalignment compensation needed, operating conditions, and industry-specific requirements. Proper selection ensures optimal performance, extended equipment lifespan, and reduced maintenance needs.

editor by CX 2024-01-16